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Many pencils across the world, and almost all in Europe, are graded on the European system using a continuum from "H" (for hardness) to "B" (for blackness), as well as "F" (for fine point). The standard writing pencil is graded HB. According to Petroski, this system might have been developed in the early 20th century by Brookman, an English pencil maker. It used "B" for black and "H" for hard; a pencil's grade was described by a sequence or successive Hs or Bs such as BB and BBB for successively softer leads, and HH and HHH for successively harder ones.9H8H7H6H5H4H3H2HHFHBB2B3B4B5B6B7B8B9BHardest→Medium→Softest
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Who made the pencil sharper?
I did, I used the pencil sharpener and made the pencil sharper.
What is a marking pencil and how is it used?
it is a pencil with the word "marking" on the side and it is used for marking
What type of stone is used in a pencil?
The stone used in a pencil is lead. x
Why can graphite used in a pencil?
Graphite is strong and not poisonous.it is soft & slipperyconsists of layers which slide over each other
Why is pencil used in chromography?
pencil is use in chromography because the pencil is made from lead
What is the personification for a pencil?
what would a pencil say to a hand?
What do you need for Beth shields middle school in 6th grade?
You need pencil's and a binder
What is the name of the pencil used in sewing?
The pencil in sewing is called a "Marking Pencil".
The forces that act when the pencil operates?
whe the pencil was used
What is a pencil rubber?
A pencil rubber otherwise known as an eraser is used to rub out pencil marks on paper
Which pencil supplies work best with light shadowing?
Use a B, 2B, or darker grade of pencil for your shading. H and 2h pencils will give you less depth.
Mineral used in pencil?
Graphite and TiO2 for the pencil paint
